title: 23-valent pneumococcal   polysaccharide vaccine.   WHO position paper.
mesh_terms: D000328:Adult; D000368:Aged; D003362:Cost-Benefit Analysis; D004196:Disease Outbreaks / Q000517:prevention & control; D006801:Humans; D007223:Infant; D011008:Pneumococcal Infections / Q000517:prevention & control; D022242:Pneumococcal Vaccines / Q000009:adverse effects / Q000191:economics / Q000627:therapeutic use*; D013296:Streptococcus pneumoniae
chemical_list: C414006:23-valent pneumococcal capsular polysaccharide vaccine; D022242:Pneumococcal Vaccines